O-ring for Bing 4mm 1mm black for Zündapp KS 80, Hercules, Kreidler, Puch MG00067151

Bing carburetor 21/20/122 small O-ring for Zündapp KS 80, Hercules, Kreidler, Puch, and various mopeds with Bing carburetor 15/10, 15/12, 15/14, 17/10, 17/12, 17/14, 17/15. Inner diameter approx. 4mm, thickness approx. 1mm. Image No. 47 in top quality. Part number 65-708.